Company XYZ is adding a new floor, floor 5, to the network. Based on this, the current requirements are to make sure the users on floor 5 can communicate with users on other floors. Currently, users on floor 5 cannot communicate with users on other floors. The following is an implementation plan to install a new VLAN for users on floor 5 and to ensure the VLAN is routing to other VLANs.
There are four steps to implementing a new VLAN:
Step 1. Create a new VLAN 500 on the fifth floor switch and on the distribution switches. Name this VLAN.
Step 2. Identify the ports needed for the users and switches. Set the switchport access vlan command to 500 and ensure that the trunk between the distribution switches is properly configured and that VLAN 500 is allowed on the trunk.
Step 3. Create an SVI interface on the distribution switches and ensure that IP addresses are assigned.
Step 4. Verify connectivity.
The troubleshooting plan checks for the following:
Step 1. Verify that all VLANs have been created:
- Was the VLAN created on all the switches?
- Verify with the show vlan command.
Step 2. Ensure that ports are in the right VLAN and trunking is working as expected:
- Did all access ports have the switchport access VLAN 500 command added?
- Were there any other ports that should have been added? If so, make those changes.
- Were these ports previously used? If so, ensure that there are no extra commands enabled on these ports that can cause conflicts. If not, is the port enabled?
- Are any user ports set to trunks? If so, issue the switchport mode access command.
- Are the trunk ports set to trunk mode?
- Is manual pruning of VLANs configured? If so, ensure that the trunks necessary to carry VLAN 500 traffic have the VLAN in the allowed statements.
Step 3. Verify SVI configurations (if necessary):
- Is the SVI already created with the correct IP address and subnet mask?
- Is it enabled?
- Is routing enabled?
- Is this SVI added in the routing protocol?
Step 4. Verify connectivity:
- Are all the links between switches in trunk mode?
- Is VLAN 500 allowed on all trunks?
- Is spanning-tree blocking any of the participating links?
- Are the ports enabled?
- Do the hosts have the right default gateways assigned?
- Ensure that the default route or some routing protocol is enabled if necessary.